Grinding-machine.



PATENTED NOV. 6, 1905.

.H. E. MBNIER. GRINDING MACHINE. APPLICATION FILED MAY 19, 1904.

wwussses ATTORNEYS UNITED STATES PATENT oEFIoE.

' HENR EMILE MENIER, or PARIS,- FRANCE.

GRINDING-MACHINE.

France, residing at No. 56.Rue de'Chateau-- dun, Paris, in the Republicof France, have invented certain new and useful Improvements in andRelating to Grinding-Machines,

.of which the following is a specification.

This invention has for its object a grinding-mill for grinding anysuitable material, presentingthe advantage of insuring a larger outputand more uniform operation as compared with grinding-mills as hithertoconstructed.

The characteristic feature of this grinder resides in the fact that thegrinding mem-- bersmillstones in this casegrind one upon the other witha movement'which is distinct and independent of the rotary motion whichis imparted to one of them.

In the accompanying drawings, Figure 1 is a central vertical section ofmy improved grinder; and Fig. 2- is a sectional view on the line 2 2,Fig. 1, illustrating the operating mechanism for the lower stone.

a represents a millstone with a convex operative surface, and b a stonewith a concave operative surface, the said millstones fitting exactlyone upon the other.

The millstone a is mounted at the extremity of ashaft 0, capable ofoscillating at d and to which an oscillatory movement is imparted by anysuitable meansas a cam, acting at e, for example. The oscillatorymovement in question is referably generated by the axis of the s aft 0,which describes a cone about point (1 as an apex, as will be readilyunderstood from the drawings.

The stone 6 is mounted upon a vertical shaft f, suitably guided at g,and to which a movement of rotation is imparted by means of anyconvenient transmission member. The arrangement of the guide 9 is suchas to allow the stone complete liberty in the vertical direction, sothat it may rest with all its weight upon thestone a. The weight of thisstone may be increased in any suitable maner. The shaft f is tubularandserves for the admission between the stones (1, and b of the substanceto be treated, which in a more or less pasty condition is forced bymeans of a pum with t e said shaft.

The specific means which may be employed for securing the motions andoperation hereinbefore described may consist of a Specification ofLetters Patent. Application filed May 19, 1904. Serial 110. 208,731.

or other similar appliance connected Patented Nov. 6, 1906.

pulls m on the shaft f, adapted to be driven y a elt m, while a spring nmay be mounted against the shaft f to exert a downward pressure thereonfor the upper stone. The ower stone a may have on its shaft 0 the rods 6e, secured about the collar a, pivotally attached to the eccentrics y"at their opposite ends. Suitable means, such as a strap p, may berovided, driving the pulley p on the shaft 0 one of the eccentrics. Thegrinding isthus performed by the two suraces, one of which has arotarymotion on its fixed axis while the other rubs across the firstsurface with its central axial point traveling across the diameter ofthe first stone in a line about its fixed axis.

The stones (1 and b are of a material adapted for use with thesubstancento be ground.

The material to be ground, either in a pasty, or fluid condition,whichis conveyed under pressure to the center of the stones a and b, isacted upon by these latter, owing to the rotation of the stone 6 uponthe stone I a and escapes at the periphery into an annu- -lar receptacleh, arranged in such a manner as to permit of collecting it at a singlepoint. The ressure of the stone 6 is suitably regulate for producing'thedesired grinding effect. In case of obstruction the substance underpressure lifts the stone 1) and automat-f is adapted for the treatmentof fluid or semifluid substances of all kinds or those contained in aliquid or semiliquid medium. It may vary in its various constructionaldetails and be constructed in any size and of any suitable materials.

- claim as my invention- 1. A grinding-mill, comprising two stones, theupper one concave and the lower one convex, one rotating on a fixedaxis, and the other movable to each side of the center of the surface ofthe first stone, means for holding the faces of said stones in contactduring their motion, and a feed-channel through the center of one of thestones.

2. A. grinding-mill, comprising two stones having their surfaces incontact andfitting each other, andmeans-for rotating :one of said stoneson a fixed axis, 111 combination with means for im arting to the second:stone travel .=in a path-generatingacone,-and a feedmhannel throlrgh thecenter oat-the upper stone.

g-mill, comprising two'stones,

I 4." A-grind' "one frotating on a fixed axis and the other v:movablearound the surface of the first stone oint traveling 20 about the fixedaxis of the ot er, and means and having its central axial for holdingthe faces of said stones in contact during their motion, in combinationwith spring means for pressing said stone ro- .tati-ng on a fixed axisagainst the other, and a feed-channel leading through the center of saidstone.

In testimony whereofi I have signed my name to'this specificationin'thepresence of twosubscribing. witnesses.

HENRI EMILE :MENIER. Witnessesz- LE'VI GHANEDLER,

H-mmson OIGoxn.

